Lock-nut.



PATENTED AUG. 29, 1905.

I. W. EXLEY.

LOCK NUT.

APPLICATION rum) APR. 26, 1905.

ISREAL V. EXLEY, OF GOLVILLE, WVASHINGTON.

LOCK-NUT.

Specification of Letters Patent.

Patented Aug. 29, 1905.

Application filed April 26, 1905. Serial No. 257,500-

locked in position thereon, thus to prevent its accidental escape, andone wherein the nut may when circumstances require be freely moved.

To these ends the invention comprises the novel features of constructionand combination of parts more fully hereinafter described.

In the accompanying drawings, Figure 1 is a perspective view of alock-nut embodying the invention. Fig. 2 is an inner end viewof the mainnut. Fig. 3 is an outer end view of the same. Fig. 4 is a section ofsaid nut, taken on the line 4 4 of Fig. 3. Fig. 5 is an inner end viewof the auxiliary nut. Fig. 6 is an outer view of the same. Fig. 7 is asection taken on the line 7 7 of Fig. 5. Fig. 8 is a longitudinalsection showing the two nuts in locked positon. Fig. 9 is a detailperspective view of the locking-key.

Referring to the drawings, 1 designates a bolt of ordinary constructionprovided, as usual, with a threaded portion 2, adapted to receive aprimary nut 3, having a bolt-receiving opening 4 and aninternally-threaded recess 5, opening toward the normally outer face ofthe nut, the opening 4 being arranged concentric of the nut andeccentric relative to the recess 5, as seen more clearly in Figs. 2 and3.

Adapted for cooperation with the main nut 3 and to lock the latter inplace upon the bolt is an auxiliary lock-nut 6, having aninternally-threaded bolt-receiving opening 7 and an externally-threadedreduced neck 8, designed to enter and for threaded engagement with therecess 5, the neck which projects from the normally inner face of thenut 6 be.- ing concentrically arranged relative to the nut and theopening 7 eccentrically of the nut and neck, as seen more clearly inFig. 5, whereby rotation of the nut 6 relative to the nut 3 will,through the engagement of the neck 8 with the recess 5, cause theopenings 4 and 7 to move out of alinement, and thus bind and tightlylook upon the threaded portion of the bolt, as will be readilyunderstood.

Formed in the body of the nut 6 adjacent its normally inner end is amarginal recess 9, which extends partially around the nut, as seen inFig. 5, and presents at its ends stops or abutments 10 11, while in oneface of the nut 3 there is formed a dovetailed groove or recess 12,adapted for the reception of a dovetailed locking member or key 13, theinner end of which projects, as at 14, beyond the adjacent face of thenut 3 and seats within the recess 9, constituting a stop to cooperatewith the stops 10 and 11, for a purpose presently explained.

In practice when the end of the key 13 is in contact with the abutment10 the openings 4 and 7 will be concentric, thus permitting the nuts tobe screwed freely onto the bolt 1 until brought to the desired position,whereupon a rotation of the auxiliary nut 6 from left to right moves theopenings into eccentricity, as before stated, for locking the nuts inposition, it being understood that this rotation may be continued untilthe end of the key contacts with the stop 11, as seen in Fig. 1. Toremove the nuts, the auxiliary nut 6 is engaged and rotated from rightto left until the abutment 10 comes into engagement with the key,whereupon the openings 4 and 7 will again be concentric and both nutsmove as one for disengagement with the bolt. It is to be observed thatthe key 13 serves normally to prevent disconnection of the nuts whenremoved from the bolt and, further, that owing to the key being removable the nuts may when desired be separated one from the other.

From the foregoing it is apparent that I produce .a simple inexpensivedevice which in practice will efficiently perform its functions to theattainment of the ends in view, it being understood that minor changesin the details herein set forth may be resorted to without departingfrom the spirit of the invention.

Having thus fully described the invention, what is claimed as new is 1.In a device of the class described, a pair of cooperating nuts havingbolt-receiving openings, the opening in one of the nuts beingeecentrically disposed, a reduced threaded neck carried by one of thenuts, the other nut having a threaded recess to receive said neck, apair of abutments provided on one of the nuts, and a stop provided onthe other nut and adapted for movement vided on one of the nuts and amovable between said abutments. locking member carried by the other nutand 2. In a device of the class described, a adapted to normally projectbetween and pair of cooperating nuts having bolt-receivconstitute a stopfor cooperation with said I 5 5 ing openings adapted for relativeregistraabutments.

tion or non-registration, one of said nuts hav- In testimony whereof Iaffix my signature ing an internally-threaded recess disposed inpresence of two witnesses. eccentrically relative to the bolt-receivingISREAL W. EXLEY, opening, a reduced externally-threaded neck Witnesses:

[0 carried by the other nut for entrance into C. A. MANTZ,

said recess, a pair of spaced abutments pro- F. W. REHFELD.

